- OpenSSL 0.9.2 06-Mar-1999
+ OpenSSL 1.1.0-dev
- Copyright (c) 1998-1999 The OpenSSL Project
+ Copyright (c) 1998-2011 The OpenSSL Project
Copyright (c) 1995-1998 Eric A. Young, Tim J. Hudson
All rights reserved.
+ DESCRIPTION
+ -----------
+
The OpenSSL Project is a collaborative effort to develop a robust,
commercial-grade, fully featured, and Open Source toolkit implementing the
Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1)
- protocols with full-strength cryptography world-wide. The project is managed
- by a worldwide community of volunteers that use the Internet to communicate,
- plan, and develop the OpenSSL tookit and its related documentation.
+ protocols as well as a full-strength general purpose cryptography library.
+ The project is managed by a worldwide community of volunteers that use the
+ Internet to communicate, plan, and develop the OpenSSL toolkit and its
+ related documentation.
OpenSSL is based on the excellent SSLeay library developed from Eric A. Young
and Tim J. Hudson. The OpenSSL toolkit is licensed under a dual-license (the
OpenSSL license plus the SSLeay license) situation, which basically means
that you are free to get and use it for commercial and non-commercial
- purposes as long as you fullfill the conditions of both licenses.
+ purposes as long as you fulfill the conditions of both licenses.
+
+ OVERVIEW
+ --------
The OpenSSL toolkit includes:
actually logically part of it. It includes routines for the following:
Ciphers
- libdes - EAY's libdes DES encryption package which has been floating
- around the net for a few years. It includes 15
- 'modes/variations' of DES (1, 2 and 3 key versions of ecb,
- cbc, cfb and ofb; pcbc and a more general form of cfb and
- ofb) including desx in cbc mode, a fast crypt(3), and
- routines to read passwords from the keyboard.
+ libdes - EAY's libdes DES encryption package which was floating
+ around the net for a few years, and was then relicensed by
+ him as part of SSLeay. It includes 15 'modes/variations'
+ of DES (1, 2 and 3 key versions of ecb, cbc, cfb and ofb;
+ pcbc and a more general form of cfb and ofb) including desx
+ in cbc mode, a fast crypt(3), and routines to read
+ passwords from the keyboard.
RC4 encryption,
RC2 encryption - 4 different modes, ecb, cbc, cfb and ofb.
Blowfish encryption - 4 different modes, ecb, cbc, cfb and ofb.
Digests
MD5 and MD2 message digest algorithms, fast implementations,
SHA (SHA-0) and SHA-1 message digest algorithms,
- MDC2 message digest. A DES based hash that is polular on smart cards.
+ MDC2 message digest. A DES based hash that is popular on smart cards.
Public Key
- RSA encryption/decryption/generation.
+ RSA encryption/decryption/generation.
There is no limit on the number of bits.
- DSA encryption/decryption/generation.
+ DSA encryption/decryption/generation.
There is no limit on the number of bits.
- Diffie-Hellman key-exchange/key generation.
+ Diffie-Hellman key-exchange/key generation.
There is no limit on the number of bits.
X.509v3 certificates
X509 encoding/decoding into/from binary ASN1 and a PEM
- based ascii-binary encoding which supports encryption with a
+ based ASCII-binary encoding which supports encryption with a
private key. Program to generate RSA and DSA certificate
requests and to generate RSA and DSA certificates.
A simple stack.
A Configuration loader that uses a format similar to MS .ini files.
- openssl:
- A command line tool which provides the following functions:
-
- enc - a general encryption program that can encrypt/decrypt using
- one of 17 different cipher/mode combinations. The
- input/output can also be converted to/from base64
- ascii encoding.
- dgst - a generate message digesting program that will generate
- message digests for any of md2, md5, sha (sha-0 or sha-1)
- or mdc2.
- asn1parse - parse and display the structure of an asn1 encoded
- binary file.
- rsa - Manipulate RSA private keys.
- dsa - Manipulate DSA private keys.
- dh - Manipulate Diffie-Hellman parameter files.
- dsaparam- Manipulate and generate DSA parameter files.
- crl - Manipulate certificate revocation lists.
- crt2pkcs7- Generate a pkcs7 object containing a crl and a certificate.
- x509 - Manipulate x509 certificates, self-sign certificates.
- req - Manipulate PKCS#10 certificate requests and also
- generate certificate requests.
- genrsa - Generates an arbitrary sized RSA private key.
- gendsa - Generates DSA parameters.
- gendh - Generates a set of Diffie-Hellman parameters, the prime
- will be a strong prime.
- ca - Create certificates from PKCS#10 certificate requests.
- This program also maintains a database of certificates
- issued.
- verify - Check x509 certificate signatures.
- speed - Benchmark OpenSSL's ciphers.
- s_server- A test SSL server.
- s_client- A test SSL client.
- s_time - Benchmark SSL performance of SSL server programs.
- errstr - Convert from OpenSSL hex error codes to a readable form.
- nseq - Netscape certificate sequence utility
-
- To install this package under a Unix derivative, read the INSTALL file. For
- a Win32 platform, read the INSTALL.W32 file.
+ openssl:
+ A command line tool that can be used for:
+ Creation of RSA, DH and DSA key parameters
+ Creation of X.509 certificates, CSRs and CRLs
+ Calculation of Message Digests
+ Encryption and Decryption with Ciphers
+ SSL/TLS Client and Server Tests
+ Handling of S/MIME signed or encrypted mail
- For people in the USA, it is possible to compile OpenSSL to use RSA Inc.'s
- public key library, RSAref. Read doc/ssleay.txt under 'rsaref.doc' on how to
- build with RSAref.
+ INSTALLATION
+ ------------
+
+ To install this package under a Unix derivative, read the INSTALL file. For
+ a Win32 platform, read the INSTALL.W32 file. For OpenVMS systems, read
+ INSTALL.VMS.
Read the documentation in the doc/ directory. It is quite rough, but it
- lists the functions, you will probably have to look at the code to work out
- how to used them. Look at the example programs.
+ lists the functions; you will probably have to look at the code to work out
+ how to use them. Look at the example programs.
+
+ PROBLEMS
+ --------
+
+ For some platforms, there are some known problems that may affect the user
+ or application author. We try to collect those in doc/PROBLEMS, with current
+ thoughts on how they should be solved in a future of OpenSSL.
+
+ SUPPORT
+ -------
+
+ See the OpenSSL website www.openssl.org for details of how to obtain
+ commercial technical support.
+
+ If you have any problems with OpenSSL then please take the following steps
+ first:
+
+ - Download the current snapshot from ftp://ftp.openssl.org/snapshot/
+ to see if the problem has already been addressed
+ - Remove ASM versions of libraries
+ - Remove compiler optimisation flags
+
+ If you wish to report a bug then please include the following information in
+ any bug report:
+
+ - On Unix systems:
+ Self-test report generated by 'make report'
+ - On other systems:
+ OpenSSL version: output of 'openssl version -a'
+ OS Name, Version, Hardware platform
+ Compiler Details (name, version)
+ - Application Details (name, version)
+ - Problem Description (steps that will reproduce the problem, if known)
+ - Stack Traceback (if the application dumps core)
+
+ Email the report to:
+
+ openssl-bugs@openssl.org
+
+ Note that the request tracker should NOT be used for general assistance
+ or support queries. Just because something doesn't work the way you expect
+ does not mean it is necessarily a bug in OpenSSL.
+
+ Note that mail to openssl-bugs@openssl.org is recorded in the public
+ request tracker database (see https://www.openssl.org/support/rt.html
+ for details) and also forwarded to a public mailing list. Confidential
+ mail may be sent to openssl-security@openssl.org (PGP key available from
+ the key servers).
+
+ HOW TO CONTRIBUTE TO OpenSSL
+ ----------------------------
+
+ Development is coordinated on the openssl-dev mailing list (see
+ http://www.openssl.org for information on subscribing). If you
+ would like to submit a patch, send it to openssl-bugs@openssl.org with
+ the string "[PATCH]" in the subject. Please be sure to include a
+ textual explanation of what your patch does.
+
+ If you are unsure as to whether a feature will be useful for the general
+ OpenSSL community please discuss it on the openssl-dev mailing list first.
+ Someone may be already working on the same thing or there may be a good
+ reason as to why that feature isn't implemented.
+
+ Patches should be as up to date as possible, preferably relative to the
+ current Git or the last snapshot. They should follow the coding style of
+ OpenSSL and compile without warnings. Some of the core team developer targets
+ can be used for testing purposes, (debug-steve64, debug-geoff etc). OpenSSL
+ compiles on many varied platforms: try to ensure you only use portable
+ features.
+
+ Note: For legal reasons, contributions from the US can be accepted only
+ if a TSU notification and a copy of the patch are sent to crypt@bis.doc.gov
+ (formerly BXA) with a copy to the ENC Encryption Request Coordinator;
+ please take some time to look at
+ http://www.bis.doc.gov/Encryption/PubAvailEncSourceCodeNofify.html [sic]
+ and
+ http://w3.access.gpo.gov/bis/ear/pdf/740.pdf (EAR Section 740.13(e))
+ for the details. If "your encryption source code is too large to serve as
+ an email attachment", they are glad to receive it by fax instead; hope you
+ have a cheap long-distance plan.
+
+ Our preferred format for changes is "diff -u" output. You might
+ generate it like this:
+
+ # cd openssl-work
+ # [your changes]
+ # ./Configure dist; make clean
+ # cd ..
+ # diff -ur openssl-orig openssl-work > mydiffs.patch
projects / openssl.git / blobdiff